When you reach the finished height of the concrete block retaining wall fill those cores containing rebar to the top with mortar.
Making a retaining wall of concrete.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
Smooth the top with a trowel.
How to build a concrete wall figure a.
Of leveling sand and half the height of the first course of blocks.
Spread additional mortar and lay cap block to finish the wall.
Mix the fill mortar slightly wetter than what you d use for joints.
In general the top of the stem of any cast concrete retaining wall should not be less than 12 inches for the proper placement of concrete.
It s entirely possible to build a retaining wall without reinforcing the concrete though not advised as the reinforcing will allow you to use less material so long as the concrete always works in compression this is how the first concrete dams were built or indeed many roman buildings.
A locking flange on the blocks for this project makes your retaining wall ideas easier to accomplish.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
How to pour a concrete retaining wall.
Refer to the plan or schematic for the retaining wall.
The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block.
Then use the marking paint and measuring tape to lay.
Follow the block manufacturer s instructions for wall height limits.